Caninemys, a new side-necked turtle ‪(‬Pelomedusoides, Podocnemididae‪)‬ from the Miocene of Brazil. (American Museum novitates, no. 3639)

Show simple item record Meylan, Peter A. (Peter Andre) Gaffney, Eugene S. Campos, Diógenes de Almeida. 2009-04-03T13:16:23Z 2009-04-03T13:16:23Z 2009
dc.description 26 p. : ill., map ; 26 cm. "March 31, 2009." Includes bibliographical references (p. 21-23). en
dc.description.abstract A new genus and species of podocnemidid pleurodire, Caninemys tridentata, is described on the basis of a skull collected by L.I. Price in 1962 from the late Miocene of Acre, Brazil. It is unique among podocnemidids ‪(‬and all other turtles‪)‬ in having greatly inflated maxillae, each with a ventral, toothlike process. Along with a midline process of the premaxillae, these processes form a tridentate condition in the upper triturating surface, also unique among podocnemidids but comparable to the condition in the kinosternid Claudius. This skull has previously been identified as the shell-based genus Stupendemys, but there are no associations supporting this assignment. The type specimens are separated by over 2000 km, and other large podocnemidid taxa are known from this time and region. Although relatively large with a condylobasal skull length of about 17 cm, Caninemys was probably about half the size of Stupendemys. Phylogenetic analysis of 63 skeletal characters provides evidence that this new taxon nests within the family Podocnemididae as follows: ‪(‬Bauruemys ‪(‬“Roxochelys” ‪(‬Podocnemis ‪(‬Caninemys ‪(‬Dacquemys ‪(‬‪(‬Erymnochelys, Peltocephalus‪)‬ ‪(‬Neochelys ‪(‬Shweboemys, Stereogenys‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬. en
dc.description.sponsorship Published by the American Museum of Natural History, New York, NY. en
dc.format.extent 5954653 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.relation.ispartofseries American Museum novitates, no. 3639. en
dc.subject Caninemys tridentata. en
dc.subject Turtles, Fossil. en
dc.subject Caninemys. en
dc.subject Brazil. en
dc.subject Acre Region (Brazil). en
dc.title Caninemys, a new side-necked turtle ‪(‬Pelomedusoides, Podocnemididae‪)‬ from the Miocene of Brazil. (American Museum novitates, no. 3639) en
dc.title.alternative Caninemys, Miocene side-necked turtle. en
dc.type Book en

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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